How to install Psycopg2

To establish a connection to the PostgreSQL server, we will make use of the pscopg2 library in Python. You can install psycopg2 using the following command:

pip install psycopg2

If the above command causes an error then use the command:

pip uninstall psycopg2
pip install psycopg2-binary

After installing the library, the following code can be used to create a connection to the database server:

Python3

import psycopg2
def get_connection():
    try:
        return psycopg2.connect(
            database="postgres",
            user="postgres",
            password="password",
            host="127.0.0.1",
            port=5432,
        )
    except:
        return False
conn = get_connection()
if conn:
    print("Connection to the PostgreSQL established successfully.")
else:
    print("Connection to the PostgreSQL encountered and error.")

Output:

Connection to the PostgreSQL established successfully.

Running the above code will produce the following result if the database credentials provided is correct and the connection is successfully established:

PostgreSQL Python – Querying Data

Psycopg2 acts as a bridge between Python applications and PostgreSQL databases. Widely employed in diverse Python systems, from web applications to data analysis tools and other software projects, Psycopg2 enables developers to execute queries and manipulate data stored in PostgreSQL databases.

In this article, we will see What Psycopg 2?, and how to use PostgreSQL using pyscopg2 in Python for executing query data.

How to install Psycopg2

Python3

PostgreSQL Python – Querying Data

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